Compounds, compositions, and methods for modulating fgf activity

A compound of formula (I):

• wherein
• R1 is H, optionally substituted C3-C20 cycloalkyl, optionally substituted C4-C20 cycloalkenyl, optionally substituted C1-C15 heterocyclyl, or optionally substituted C6-C16 aryl;
• R2 is optionally substituted C3-C20 cycloalkyl, optionally substituted C4-C20 cycloalkenyl, optionally substituted C1-C15 heterocyclyl, or optionally substituted C6-C16 aryl;
• Q1 is optionally substituted 4-to-6 membered heterocyclylene containing at least one nitrogen atom;
• Q2 is optionally substituted 5-to-7 membered heterocyclyl containing at least one nitrogen atom;
• and
• Q3 is optionally substituted C1-C15 heterocyclyl, optionally substituted C6-C16 aryl, optionally substituted C3-C20 cycloalkyl, or optionally substituted C4-C20 cycloalkenyl, wherein Q3 is fused to Q2,
• or a pharmaceutically acceptable salt thereof.